September weather forecast
Bethune Beach, FL

The first month of the autumn, September, is also a hot month in Bethune Beach, Florida, with temperature in the range of an average high of 86.7°F (30.4°C) and an average low of 75.9°F (24.4°C).

Temperature

September's presence marks an average high-temperature of a still tropical 86.7°F (30.4°C), subtly varied from August's 89.2°F (31.8°C). Bethune Beach temperatures generally rest at a low of 75.9°F (24.4°C) during the September nights.

Heat index

The heat index value during September is computed to be a sweltering 100.4°F (38°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Heat index determinations are made taking into account the shade and light air movements. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

The average relative humidity in September in Bethune Beach is 76%.

Rainfall

In September, the rain falls for 14.8 days. Throughout September, 1.34" (34mm) of precipitation is accumulated. Throughout the year, there are 142.9 rainfall days, and 12.99" (330mm) of precipitation is accumulated.

Daylight

In Bethune Beach, Florida, the average length of the day in September is 12h and 19min.
On the first day of the month, sunrise is at 7:01 am and sunset at 7:44 pm. On the last day of September, in Bethune Beach, sunrise is at 7:16 am and sunset at 7:09 pm EDT.

Sunshine

The average sunshine in September in Bethune Beach is 8.9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index, 7 during September, leads to the following recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.